1k
why is the sequence written four different ways across four vendor sites
Same nominal compound, four suppliers, four different sequence representations. One uses three-letter codes, one uses single-letter, one has a different N-terminal…
Research Peptides
c/researchpeptides · created 16 Mar 2024
Everything else in the vial drawer. Handling, identity, scepticism.
29kmembers
62submissions
1.8kcomments
nowiki
New
473
posted 3 days ago by u/reverse_image_ron
[Sceptic] every new three-letter analog needs a data table before a hype threadPosting this as a discussion rather than a claim: every new three-letter analog needs a data table before a hype thread. Stocked lines and made-to-order lines have…
207
TB-500 and Thymosin Beta-4 are not the same product and vendors know that
Thinking out loud about this: TB-500 and Thymosin Beta-4 are not the same product and vendors know that. Storage guidance that names a temperature, a state and a…
151
posted 6 days ago by u/adnan_karlsen
[Lab] sequence check before price check. every time.Filing this under things worth writing down: sequence check before price check. every time. Purity methods differ by compound class. A gradient and wavelength developed…
PeptideMeter — community peptide analytics
Vendor-level purity averages over time, built from independent results rather than vendor claims. Transparent methodology, open dataset.
Browse results404
posted 8 days ago by u/chidi_yilmaz
[Explainer] evidence levels: in vitro, rodent, human. say which one you mean.evidence levels: in vitro, rodent, human. say which one you mean — with the reasoning, because a rule without a reason gets ignored. Sent an unusual compound to…
242
posted 11 days ago by u/rania_salinas
[Question] how do you verify identity when there is no reference standardGenuine question, and the title is the question: how do you verify identity when there is no reference standard. Confirmed the lead time in writing before ordering a…
539
posted 14 days ago by u/search_before_post
[Caution] research use only means research use onlyresearch use only means research use only, and I am aware this is a minority view on this board. The three questions to ask before ordering anything from the long tail…
65
posted 18 days ago by u/rui_only_ro
[Discussion] the GH secretagogue story is 30 years old and mostly a cautionary talethe GH secretagogue story is 30 years old and mostly a cautionary tale, which sounds obvious until you try to state the evidence for it. Figures up front so nobody has…
94
posted 22 days ago by u/ahmed_fonseca
[Lab] selectivity claims are usually receptor-panel marketingselectivity claims are usually receptor-panel marketing. One vial, one service, one member paying, which is the only kind of result this board should treat as evidence.…
586
[Discussion] the thymosin advice in here is 3 years out of date
Posting this as a discussion rather than a claim: the thymosin advice in here is 3 years out of date. Pulling the figures out of the title: 3 years. All of it is…
451
posted 1 months ago by u/ines_boateng
[Discussion] the TB-500 advice in here is 2 years out of datethe TB-500 advice in here is 2 years out of date, which sounds obvious until you try to state the evidence for it. To save the first four comments: 2 years. Net peptide…
590
[PSA] research peptides are not what most of this community thinks it is
Putting this at the top of the board where it belongs: research peptides are not what most of this community thinks it is. Net peptide content accounts for counterion,…
198
posted 1 months ago by u/old_account_2023
[Meta] the handling rule is doing its job and people should stop complainingProposal, not a decision: the handling rule is doing its job and people should stop complaining. Storage conditions came back specific rather than generic when I asked.…
747
posted 1 months ago by u/chain_confirm_c
help me understand thymosin, I have read the wiki twicehelp me understand thymosin, I have read the wiki twice, and I want the answer with the reasoning attached rather than just the conclusion. Asked HJ which lines they…
241
posted 1 months ago by u/fabio_lehtinen
genuine question about secretagogue that I am slightly embarrassed to askAsking properly rather than in a comment on somebody else’s thread: genuine question about secretagogue that I am slightly embarrassed to ask. Net peptide content on…
Sigma-Aldrich — certified reference materials
Reference standards, analytical reagents and system-suitability material. If you are running your own method, start with a known.
Reference standards217
posted 2 months ago by u/bence_ibarra
someone explain thymosin to me like I have not read a paper in yearssomeone explain thymosin to me like I have not read a paper in years. I am not trying to be the "source?" guy. I would just like a source. The three questions to ask…
504
reading TB-500 threads from 2024 and half of it aged badly
reading TB-500 threads from 2024 and half of it aged badly. Making the case below, and I expect to lose some of it in the comments. Ordered under a name that turned out…
330
posted 2 months ago by u/boots_or_bust
research peptides — 22 things I got wrong before I got it rightresearch peptides — 22 things I got wrong before I got it right. I have gone back and forth on this for months. Net peptide content accounts for counterion, water and…
360
posted 2 months ago by u/deleted_my_history
[Question] how do you actually verify TB-500Slightly embarrassed to be asking this, but: how do you actually verify TB-500. Purity methods differ by compound class. A gradient and wavelength developed for one…
865
posted 3 months ago by u/patient_labslip_log
[Meta] proposal — a flair for thymosin postsproposal — a flair for thymosin posts. Disagreement welcome, but bring a concrete alternative wording. The three questions to ask before ordering anything from the long…
1.2k
posted 3 months ago by u/bence_ibarra
why does nobody talk about thymosinwhy does nobody talk about thymosin. I would rather ask a basic question now than get this wrong quietly for two months. Naming in this space is inconsistent. Several…
948
posted 3 months ago by u/nayeli_iyer
genuine question about TB-500 that I am slightly embarrassed to askQuestion in the title, detail here: genuine question about TB-500 that I am slightly embarrassed to ask. For any compound with a thin testing history, identity is the…
-60
posted 4 months ago by u/cold_chromatogram_only
[Discussion] the research peptides advice in here is 3 years out of datethe research peptides advice in here is 3 years out of date. I have gone back and forth on this for months. 3 years — those are the numbers, and they are the ones I am…
-22
posted 4 months ago by u/hassan_ostergaard
[Discussion] we are measuring handling at the wrong time and calling it noiseThe title is the argument: we are measuring handling at the wrong time and calling it noise. Here is the rest of it. For any compound with a thin testing history,…
1.6k
posted 5 months ago by u/adnan_karlsen
do research peptides actually matter or is it forum lore at this pointdo research peptides actually matter or is it forum lore at this point. I am not trying to be the "source?" guy. I would just like a source. Asked BCH which lines they…